zekukith, from zaakak, "to be pure." ; "the gold and the crystal cannot equal wisdom." Glass is meant, some costly goblet composed of glass and gold, such as Wilkinson says the Egyptians made (Ancient Egyptians 2:61). Kerach, literally, ice, the ancients believing rock crystal to be ice intensely congealed. In , "the likeness of the firmament was as the terrible (rather Splendid, dazzling) crystal" (; ).